17.00 - In-Doubt Resolution - IBM IMS Interface for Teradata

IBM IMS Interface for Teradata® Reference

prodname
IBM IMS Interface for Teradata
vrm_release
17.00
created_date
June 2020
category
Programming Reference
featnum
B035-2447-220K
It is possible for a failure to occur during the 2PC session during one of the following circumstances:
  • The communication link between the coordinator, such as IMS, and the participant, such as the database, is lost.
  • There is an IMS system crash.
  • A participant, such as DB2, experiences a system failure.

When the electrical power, system, or communication line is restored after a failure, the coordinator reconciles existing activity logs from the coordinator and the participants.

If the logs cannot be reconciled, then in-doubt resolution is necessary.

There are two forms of in-doubt resolution: automatic and manual.